Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Most notable changes in here:

   1) By far the biggest accomplishment, thanks to a large range of
      contributors, is the addition of multi-send for transmit.  This is
      the result of discussions back in Chicago, and the hard work of
      several individuals.

      Now, when the ->ndo_start_xmit() method of a driver sees
      skb->xmit_more as true, it can choose to defer the doorbell
      telling the driver to start processing the new TX queue entires.

      skb->xmit_more means that the generic networking is guaranteed to
      call the driver immediately with another SKB to send.

      There is logic added to the qdisc layer to dequeue multiple
      packets at a time, and the handling mis-predicted offloads in
      software is now done with no locks held.

      Finally, pktgen is extended to have a "burst" parameter that can
      be used to test a multi-send implementation.

      Several drivers have xmit_more support: i40e, igb, ixgbe, mlx4,
      virtio_net

      Adding support is almost trivial, so export more drivers to
      support this optimization soon.

      I want to thank, in no particular or implied order, Jesper
      Dangaard Brouer, Eric Dumazet, Alexander Duyck, Tom Herbert, Jamal
      Hadi Salim, John Fastabend, Florian Westphal, Daniel Borkmann,
      David Tat, Hannes Frederic Sowa, and Rusty Russell.

   2) PTP and timestamping support in bnx2x, from Michal Kalderon.

   3) Allow adjusting the rx_copybreak threshold for a driver via
      ethtool, and add rx_copybreak support to enic driver.  From
      Govindarajulu Varadarajan.

   4) Significant enhancements to the generic PHY layer and the bcm7xxx
      driver in particular (EEE support, auto power down, etc.) from
      Florian Fainelli.

   5) Allow raw buffers to be used for flow dissection, allowing drivers
      to determine the optimal "linear pull" size for devices that DMA
      into pools of pages.  The objective is to get exactly the
      necessary amount of headers into the linear SKB area pre-pulled,
      but no more.  The new interface drivers use is eth_get_headlen().
      From WANG Cong, with driver conversions (several had their own
      by-hand duplicated implementations) by Alexander Duyck and Eric
      Dumazet.

   6) Support checksumming more smoothly and efficiently for
      encapsulations, and add "foo over UDP" facility.  From Tom
      Herbert.

   7) Add Broadcom SF2 switch driver to DSA layer, from Florian
      Fainelli.

   8) eBPF now can load programs via a system call and has an extensive
      testsuite.  Alexei Starovoitov and Daniel Borkmann.

   9) Major overhaul of the packet scheduler to use RCU in several major
      areas such as the classifiers and rate estimators.  From John
      Fastabend.

  10) Add driver for Intel FM10000 Ethernet Switch, from Alexander
      Duyck.

  11) Rearrange TCP_SKB_CB() to reduce cache line misses, from Eric
      Dumazet.

  12) Add Datacenter TCP congestion control algorithm support, From
      Florian Westphal.

  13) Reorganize sk_buff so that __copy_skb_header() is significantly
      faster.  From Eric Dumazet"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1558 commits)
  netlabel: directly return netlbl_unlabel_genl_init()
  net: add netdev_txq_bql_{enqueue, complete}_prefetchw() helpers
  net: description of dma_cookie cause make xmldocs warning
  cxgb4: clean up a type issue
  cxgb4: potential shift wrapping bug
  i40e: skb->xmit_more support
  net: fs_enet: Add NAPI TX
  net: fs_enet: Remove non NAPI RX
  r8169:add support for RTL8168EP
  net_sched: copy exts->type in tcf_exts_change()
  wimax: convert printk to pr_foo()
  af_unix: remove 0 assignment on static
  ipv6: Do not warn for informational ICMP messages, regardless of type.
  Update Intel Ethernet Driver maintainers list
  bridge: Save frag_max_size between PRE_ROUTING and POST_ROUTING
  tipc: fix bug in multicast congestion handling
  net: better IFF_XMIT_DST_RELEASE support
  net/mlx4_en: remove NETDEV_TX_BUSY
  3c59x: fix bad split of cpu_to_le32(pci_map_single())
  net: bcmgenet: fix Tx ring priority programming
  ...

20 files changed, 479 insertions, 259 deletions

diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.c b/drivers/net/wireless/mwifiex/11n_rxreorder.c
index 06a2c215ef5e..40057079ffb9 100644
--- a/drivers/net/wireless/mwifiex/11n_rxreorder.c
+++ b/drivers/net/wireless/mwifiex/11n_rxreorder.c
@@ -183,6 +183,15 @@ mwifiex_del_rx_reorder_entry(struct mwifiex_private *priv,
 	if (!tbl)
 		return;
 
+	spin_lock_irqsave(&priv->adapter->rx_proc_lock, flags);
+	priv->adapter->rx_locked = true;
+	if (priv->adapter->rx_processing) {
+		spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags);
+		flush_workqueue(priv->adapter->rx_workqueue);
+	} else {
+		spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags);
+	}
+
 	start_win = (tbl->start_win + tbl->win_size) & (MAX_TID_VALUE - 1);
 	mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, start_win);
 
@@ -194,6 +203,11 @@ mwifiex_del_rx_reorder_entry(struct mwifiex_private *priv,
 
 	kfree(tbl->rx_reorder_ptr);
 	kfree(tbl);
+
+	spin_lock_irqsave(&priv->adapter->rx_proc_lock, flags);
+	priv->adapter->rx_locked = false;
+	spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags);
+
 }
 
 /*
diff --git a/drivers/net/wireless/mwifiex/Kconfig b/drivers/net/wireless/mwifiex/Kconfig
index ecdf34505b54..e70d0df9b0da 100644
--- a/drivers/net/wireless/mwifiex/Kconfig
+++ b/drivers/net/wireless/mwifiex/Kconfig
@@ -9,12 +9,12 @@ config MWIFIEX
 	  mwifiex.
 
 config MWIFIEX_SDIO
-	tristate "Marvell WiFi-Ex Driver for SD8786/SD8787/SD8797/SD8897"
+	tristate "Marvell WiFi-Ex Driver for SD8786/SD8787/SD8797/SD8887/SD8897"
 	depends on MWIFIEX && MMC
 	select FW_LOADER
 	---help---
 	  This adds support for wireless adapters based on Marvell
-	  8786/8787/8797 chipsets with SDIO interface.
+	  8786/8787/8797/8887/8897 chipsets with SDIO interface.
 
 	  If you choose to build it as a module, it will be called
 	  mwifiex_sdio.
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index e2e6bf13c2d8..0dd672954ad1 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -246,7 +246,7 @@ mwifiex_cfg80211_remain_on_channel(struct wiphy *wiphy,
 	}
 
 	if (priv->roc_cfg.cookie) {
-		wiphy_dbg(wiphy, "info: ongoing ROC, cookie = 0x%llu\n",
+		wiphy_dbg(wiphy, "info: ongoing ROC, cookie = 0x%llx\n",
 			  priv->roc_cfg.cookie);
 		return -EBUSY;
 	}
@@ -1557,6 +1557,7 @@ static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 						       band));
 
 	bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
+				  CFG80211_BSS_FTYPE_UNKNOWN,
 				  bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 				  0, ie_buf, ie_len, 0, GFP_KERNEL);
 	cfg80211_put_bss(priv->wdev->wiphy, bss);
@@ -1935,13 +1936,6 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
 
 	wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
 
-	if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
-	    atomic_read(&priv->wmm.tx_pkts_queued) >=
-	    MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN) {
-		dev_dbg(priv->adapter->dev, "scan rejected due to traffic\n");
-		return -EBUSY;
-	}
-
 	/* Block scan request if scan operation or scan cleanup when interface
 	 * is disabled is in process
 	 */
@@ -1980,7 +1974,7 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
 		user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
 		user_scan_cfg->chan_list[i].radio_type = chan->band;
 
-		if (chan->flags & IEEE80211_CHAN_NO_IR)
+		if ((chan->flags & IEEE80211_CHAN_NO_IR) || !request->n_ssids)
 			user_scan_cfg->chan_list[i].scan_type =
 						MWIFIEX_SCAN_TYPE_PASSIVE;
 		else
@@ -1990,6 +1984,11 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
 		user_scan_cfg->chan_list[i].scan_time = 0;
 	}
 
+	if (priv->adapter->scan_chan_gap_enabled &&
+	    mwifiex_is_any_intf_active(priv))
+		user_scan_cfg->scan_chan_gap =
+					      priv->adapter->scan_chan_gap_time;
+
 	ret = mwifiex_scan_networks(priv, user_scan_cfg);
 	kfree(user_scan_cfg);
 	if (ret) {
@@ -2914,7 +2913,6 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
 
 	wiphy->features |= NL80211_FEATURE_HT_IBSS |
 			   NL80211_FEATURE_INACTIVITY_TIMER |
-			   NL80211_FEATURE_LOW_PRIORITY_SCAN |
 			   NL80211_FEATURE_NEED_OBSS_SCAN;
 
 	/* Reserve space for mwifiex specific private data for BSS */
diff --git a/drivers/net/wireless/mwifiex/cmdevt.c b/drivers/net/wireless/mwifiex/cmdevt.c
index baf0aab63c04..85597200badc 100644
--- a/drivers/net/wireless/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/mwifiex/cmdevt.c
@@ -1470,7 +1470,7 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 	struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec;
 	struct mwifiex_adapter *adapter = priv->adapter;
 	struct mwifiex_ie_types_header *tlv;
-	struct hw_spec_fw_api_rev *api_rev;
+	struct hw_spec_api_rev *api_rev;
 	u16 resp_size, api_id;
 	int i, left_len, parsed_len = 0;
 
@@ -1538,23 +1538,30 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 		while (left_len > sizeof(struct mwifiex_ie_types_header)) {
 			tlv = (void *)&hw_spec->tlvs + parsed_len;
 			switch (le16_to_cpu(tlv->type)) {
-			case TLV_TYPE_FW_API_REV:
-				api_rev = (struct hw_spec_fw_api_rev *)tlv;
+			case TLV_TYPE_API_REV:
+				api_rev = (struct hw_spec_api_rev *)tlv;
 				api_id = le16_to_cpu(api_rev->api_id);
 				switch (api_id) {
 				case KEY_API_VER_ID:
-					adapter->fw_key_api_major_ver =
+					adapter->key_api_major_ver =
 							api_rev->major_ver;
-					adapter->fw_key_api_minor_ver =
+					adapter->key_api_minor_ver =
 							api_rev->minor_ver;
 					dev_dbg(adapter->dev,
-						"fw_key_api v%d.%d\n",
-						adapter->fw_key_api_major_ver,
-						adapter->fw_key_api_minor_ver);
+						"key_api v%d.%d\n",
+						adapter->key_api_major_ver,
+						adapter->key_api_minor_ver);
+					break;
+				case FW_API_VER_ID:
+					adapter->fw_api_ver =
+							api_rev->major_ver;
+					dev_dbg(adapter->dev,
+						"Firmware api version %d\n",
+						adapter->fw_api_ver);
 					break;
 				default:
 					dev_warn(adapter->dev,
-						 "Unknown FW api_id: %d\n",
+						 "Unknown api_id: %d\n",
 						 api_id);
 					break;
 				}
@@ -1567,7 +1574,8 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 			}
 			parsed_len += le16_to_cpu(tlv->len) +
 				      sizeof(struct mwifiex_ie_types_header);
-			left_len -= parsed_len;
+			left_len -= le16_to_cpu(tlv->len) +
+				      sizeof(struct mwifiex_ie_types_header);
 		}
 	}
 
@@ -1605,5 +1613,8 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 		adapter->if_ops.update_mp_end_port(adapter,
 					le16_to_cpu(hw_spec->mp_end_port));
 
+	if (adapter->fw_api_ver == MWIFIEX_FW_V15)
+		adapter->scan_chan_gap_enabled = true;
+
 	return 0;
 }
diff --git a/drivers/net/wireless/mwifiex/decl.h b/drivers/net/wireless/mwifiex/decl.h
index 0e03fe39fc35..e0d00a7f0ec3 100644
--- a/drivers/net/wireless/mwifiex/decl.h
+++ b/drivers/net/wireless/mwifiex/decl.h
@@ -48,8 +48,8 @@
 #define MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE        16
 #define MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE   64
 #define MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE   64
-#define MWIFIEX_11AC_UAP_AMPDU_DEF_TXWINSIZE   48
-#define MWIFIEX_11AC_UAP_AMPDU_DEF_RXWINSIZE   32
+#define MWIFIEX_11AC_UAP_AMPDU_DEF_TXWINSIZE   64
+#define MWIFIEX_11AC_UAP_AMPDU_DEF_RXWINSIZE   64
 
 #define MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT  0xffff
 
diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h
index 49da2d53d294..1eb61739071f 100644
--- a/drivers/net/wireless/mwifiex/fw.h
+++ b/drivers/net/wireless/mwifiex/fw.h
@@ -83,7 +83,7 @@ enum KEY_TYPE_ID {
 #define WPA_PN_SIZE		8
 #define KEY_PARAMS_FIXED_LEN	10
 #define KEY_INDEX_MASK		0xf
-#define FW_KEY_API_VER_MAJOR_V2	2
+#define KEY_API_VER_MAJOR_V2	2
 
 #define KEY_MCAST	BIT(0)
 #define KEY_UNICAST	BIT(1)
@@ -170,7 +170,8 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define TLV_TYPE_COALESCE_RULE      (PROPRIETARY_TLV_BASE_ID + 154)
 #define TLV_TYPE_KEY_PARAM_V2       (PROPRIETARY_TLV_BASE_ID + 156)
 #define TLV_TYPE_TDLS_IDLE_TIMEOUT  (PROPRIETARY_TLV_BASE_ID + 194)
-#define TLV_TYPE_FW_API_REV         (PROPRIETARY_TLV_BASE_ID + 199)
+#define TLV_TYPE_SCAN_CHANNEL_GAP   (PROPRIETARY_TLV_BASE_ID + 197)
+#define TLV_TYPE_API_REV            (PROPRIETARY_TLV_BASE_ID + 199)
 
 #define MWIFIEX_TX_DATA_BUF_SIZE_2K        2048
 
@@ -653,6 +654,12 @@ struct mwifiex_ie_types_num_probes {
 	__le16 num_probes;
 } __packed;
 
+struct mwifiex_ie_types_scan_chan_gap {
+	struct mwifiex_ie_types_header header;
+	/* time gap in TUs to be used between two consecutive channels scan */
+	__le16 chan_gap;
+} __packed;
+
 struct mwifiex_ie_types_wildcard_ssid_params {
 	struct mwifiex_ie_types_header header;
 	u8 max_ssid_length;
@@ -844,11 +851,12 @@ struct host_cmd_ds_802_11_ps_mode_enh {
 	} params;
 } __packed;
 
-enum FW_API_VER_ID {
+enum API_VER_ID {
 	KEY_API_VER_ID = 1,
+	FW_API_VER_ID = 2,
 };
 
-struct hw_spec_fw_api_rev {
+struct hw_spec_api_rev {
 	struct mwifiex_ie_types_header header;
 	__le16 api_id;
 	u8 major_ver;
@@ -1248,6 +1256,7 @@ struct mwifiex_user_scan_cfg {
 	u8 num_ssids;
 	/* Variable number (fixed maximum) of channels to scan up */
 	struct mwifiex_user_scan_chan chan_list[MWIFIEX_USER_SCAN_CHAN_MAX];
+	u16 scan_chan_gap;
 } __packed;
 
 struct ie_body {
diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index 269a277d0a2e..580aa45ec4bc 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -212,6 +212,7 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
 	adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
 	adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
 	adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
+	adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME;
 
 	adapter->scan_probes = 1;
 
@@ -280,10 +281,9 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
 	memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
 	adapter->arp_filter_size = 0;
 	adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
-	adapter->empty_tx_q_cnt = 0;
 	adapter->ext_scan = true;
-	adapter->fw_key_api_major_ver = 0;
-	adapter->fw_key_api_minor_ver = 0;
+	adapter->key_api_major_ver = 0;
+	adapter->key_api_minor_ver = 0;
 }
 
 /*
@@ -447,8 +447,10 @@ int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
 	spin_lock_init(&adapter->cmd_free_q_lock);
 	spin_lock_init(&adapter->cmd_pending_q_lock);
 	spin_lock_init(&adapter->scan_pending_q_lock);
+	spin_lock_init(&adapter->rx_proc_lock);
 
 	skb_queue_head_init(&adapter->usb_rx_data_q);
+	skb_queue_head_init(&adapter->rx_data_q);
 
 	for (i = 0; i < adapter->priv_num; ++i) {
 		INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
@@ -614,6 +616,7 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
 	int ret = -EINPROGRESS;
 	struct mwifiex_private *priv;
 	s32 i;
+	unsigned long flags;
 	struct sk_buff *skb;
 
 	/* mwifiex already shutdown */
@@ -648,6 +651,21 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
 		}
 	}
 
+	spin_lock_irqsave(&adapter->rx_proc_lock, flags);
+
+	while ((skb = skb_dequeue(&adapter->rx_data_q))) {
+		struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
+
+		atomic_dec(&adapter->rx_pending);
+		priv = adapter->priv[rx_info->bss_num];
+		if (priv)
+			priv->stats.rx_dropped++;
+
+		dev_kfree_skb_any(skb);
+	}
+
+	spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
+
 	spin_lock(&adapter->mwifiex_lock);
 
 	if (adapter->if_ops.data_complete) {
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index dfa37eadc4db..d5070c444fe1 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -28,91 +28,6 @@ const char driver_version[] = "mwifiex " VERSION " (%s) ";
 static char *cal_data_cfg;
 module_param(cal_data_cfg, charp, 0);
 
-static void scan_delay_timer_fn(unsigned long data)
-{
-	struct mwifiex_private *priv = (struct mwifiex_private *)data;
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct cmd_ctrl_node *cmd_node, *tmp_node;
-	spinlock_t *scan_q_lock = &adapter->scan_pending_q_lock;
-	unsigned long flags;
-
-	if (adapter->surprise_removed)
-		return;
-
-	if (adapter->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT ||
-	    !adapter->scan_processing) {
-		/*
-		 * Abort scan operation by cancelling all pending scan
-		 * commands
-		 */
-		spin_lock_irqsave(scan_q_lock, flags);
-		list_for_each_entry_safe(cmd_node, tmp_node,
-					 &adapter->scan_pending_q, list) {
-			list_del(&cmd_node->list);
-			mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
-		}
-		spin_unlock_irqrestore(scan_q_lock, flags);
-
-		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
-		adapter->scan_processing = false;
-		adapter->scan_delay_cnt = 0;
-		adapter->empty_tx_q_cnt = 0;
-		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
-
-		if (priv->scan_request) {
-			dev_dbg(adapter->dev, "info: aborting scan\n");
-			cfg80211_scan_done(priv->scan_request, 1);
-			priv->scan_request = NULL;
-		} else {
-			priv->scan_aborting = false;
-			dev_dbg(adapter->dev, "info: scan already aborted\n");
-		}
-		goto done;
-	}
-
-	if (!atomic_read(&priv->adapter->is_tx_received)) {
-		adapter->empty_tx_q_cnt++;
-		if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) {
-			/*
-			 * No Tx traffic for 200msec. Get scan command from
-			 * scan pending queue and put to cmd pending queue to
-			 * resume scan operation
-			 */
-			adapter->scan_delay_cnt = 0;
-			adapter->empty_tx_q_cnt = 0;
-			spin_lock_irqsave(scan_q_lock, flags);
-
-			if (list_empty(&adapter->scan_pending_q)) {
-				spin_unlock_irqrestore(scan_q_lock, flags);
-				goto done;
-			}
-
-			cmd_node = list_first_entry(&adapter->scan_pending_q,
-						    struct cmd_ctrl_node, list);
-			list_del(&cmd_node->list);
-			spin_unlock_irqrestore(scan_q_lock, flags);
-
-			mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
-							true);
-			queue_work(adapter->workqueue, &adapter->main_work);
-			goto done;
-		}
-	} else {
-		adapter->empty_tx_q_cnt = 0;
-	}
-
-	/* Delay scan operation further by 20msec */
-	mod_timer(&priv->scan_delay_timer, jiffies +
-		  msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
-	adapter->scan_delay_cnt++;
-
-done:
-	if (atomic_read(&priv->adapter->is_tx_received))
-		atomic_set(&priv->adapter->is_tx_received, false);
-
-	return;
-}
-
 /*
  * This function registers the device and performs all the necessary
  * initializations.
@@ -160,10 +75,6 @@ static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops,
 
 		adapter->priv[i]->adapter = adapter;
 		adapter->priv_num++;
-
-		setup_timer(&adapter->priv[i]->scan_delay_timer,
-			    scan_delay_timer_fn,
-			    (unsigned long)adapter->priv[i]);
 	}
 	mwifiex_init_lock_list(adapter);
 
@@ -207,7 +118,6 @@ static int mwifiex_unregister(struct mwifiex_adapter *adapter)
 	for (i = 0; i < adapter->priv_num; i++) {
 		if (adapter->priv[i]) {
 			mwifiex_free_curr_bcn(adapter->priv[i]);
-			del_timer_sync(&adapter->priv[i]->scan_delay_timer);
 			kfree(adapter->priv[i]);
 		}
 	}
@@ -216,6 +126,38 @@ static int mwifiex_unregister(struct mwifiex_adapter *adapter)
 	return 0;
 }
 
+static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
+{
+	unsigned long flags;
+	struct sk_buff *skb;
+
+	spin_lock_irqsave(&adapter->rx_proc_lock, flags);
+	if (adapter->rx_processing || adapter->rx_locked) {
+		spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
+		goto exit_rx_proc;
+	} else {
+		adapter->rx_processing = true;
+		spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
+	}
+
+	/* Check for Rx data */
+	while ((skb = skb_dequeue(&adapter->rx_data_q))) {
+		atomic_dec(&adapter->rx_pending);
+		if (adapter->delay_main_work &&
+		    (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
+			adapter->delay_main_work = false;
+			queue_work(adapter->workqueue, &adapter->main_work);
+		}
+		mwifiex_handle_rx_packet(adapter, skb);
+	}
+	spin_lock_irqsave(&adapter->rx_proc_lock, flags);
+	adapter->rx_processing = false;
+	spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
+
+exit_rx_proc:
+	return 0;
+}
+
 /*
  * The main process.
  *
@@ -253,6 +195,19 @@ process_start:
 		    (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY))
 			break;
 
+		/* If we process interrupts first, it would increase RX pending
+		 * even further. Avoid this by checking if rx_pending has
+		 * crossed high threshold and schedule rx work queue
+		 * and then process interrupts
+		 */
+		if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING) {
+			adapter->delay_main_work = true;
+			if (!adapter->rx_processing)
+				queue_work(adapter->rx_workqueue,
+					   &adapter->rx_work);
+			break;
+		}
+
 		/* Handle pending interrupt if any */
 		if (adapter->int_status) {
 			if (adapter->hs_activated)
@@ -261,6 +216,9 @@ process_start:
 				adapter->if_ops.process_int_status(adapter);
 		}
 
+		if (adapter->rx_work_enabled && adapter->data_received)
+			queue_work(adapter->rx_workqueue, &adapter->rx_work);
+
 		/* Need to wake up the card ? */
 		if ((adapter->ps_state == PS_STATE_SLEEP) &&
 		    (adapter->pm_wakeup_card_req &&
@@ -273,6 +231,7 @@ process_start:
 		}
 
 		if (IS_CARD_RX_RCVD(adapter)) {
+			adapter->data_received = false;
 			adapter->pm_wakeup_fw_try = false;
 			if (adapter->ps_state == PS_STATE_SLEEP)
 				adapter->ps_state = PS_STATE_AWAKE;
@@ -284,8 +243,8 @@ process_start:
 			    adapter->tx_lock_flag)
 				break;
 
-			if ((adapter->scan_processing &&
-			     !adapter->scan_delay_cnt) || adapter->data_sent ||
+			if ((!adapter->scan_chan_gap_enabled &&
+			     adapter->scan_processing) || adapter->data_sent ||
 			    mwifiex_wmm_lists_empty(adapter)) {
 				if (adapter->cmd_sent || adapter->curr_cmd ||
 				    (!is_command_pending(adapter)))
@@ -339,7 +298,8 @@ process_start:
 			}
 		}
 
-		if ((!adapter->scan_processing || adapter->scan_delay_cnt) &&
+		if ((adapter->scan_chan_gap_enabled ||
+		     !adapter->scan_processing) &&
 		    !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter)) {
 			mwifiex_wmm_process_tx(adapter);
 			if (adapter->hs_activated) {
@@ -366,7 +326,8 @@ process_start:
 	} while (true);
 
 	spin_lock_irqsave(&adapter->main_proc_lock, flags);
-	if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) {
+	if (!adapter->delay_main_work &&
+	    (adapter->int_status || IS_CARD_RX_RCVD(adapter))) {
 		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 		goto process_start;
 	}
@@ -407,6 +368,12 @@ static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
 	flush_workqueue(adapter->workqueue);
 	destroy_workqueue(adapter->workqueue);
 	adapter->workqueue = NULL;
+
+	if (adapter->rx_workqueue) {
+		flush_workqueue(adapter->rx_workqueue);
+		destroy_workqueue(adapter->rx_workqueue);
+		adapter->rx_workqueue = NULL;
+	}
 }
 
 /*
@@ -598,9 +565,6 @@ int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
 	atomic_inc(&priv->adapter->tx_pending);
 	mwifiex_wmm_add_buf_txqueue(priv, skb);
 
-	if (priv->adapter->scan_delay_cnt)
-		atomic_set(&priv->adapter->is_tx_received, true);
-
 	queue_work(priv->adapter->workqueue, &priv->adapter->main_work);
 
 	return 0;
@@ -824,6 +788,21 @@ int is_command_pending(struct mwifiex_adapter *adapter)
 }
 
 /*
+ * This is the RX work queue function.
+ *
+ * It handles the RX operations.
+ */
+static void mwifiex_rx_work_queue(struct work_struct *work)
+{
+	struct mwifiex_adapter *adapter =
+		container_of(work, struct mwifiex_adapter, rx_work);
+
+	if (adapter->surprise_removed)
+		return;
+	mwifiex_process_rx(adapter);
+}
+
+/*
  * This is the main work queue function.
  *
  * It handles the main process, which in turn handles the complete
@@ -879,6 +858,11 @@ mwifiex_add_card(void *card, struct semaphore *sem,
 	adapter->cmd_wait_q.status = 0;
 	adapter->scan_wait_q_woken = false;
 
+	if (num_possible_cpus() > 1) {
+		adapter->rx_work_enabled = true;
+		pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
+	}
+
 	adapter->workqueue =
 		alloc_workqueue("MWIFIEX_WORK_QUEUE",
 				WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
@@ -886,6 +870,18 @@ mwifiex_add_card(void *card, struct semaphore *sem,
 		goto err_kmalloc;
 
 	INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
+
+	if (adapter->rx_work_enabled) {
+		adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
+							WQ_HIGHPRI |
+							WQ_MEM_RECLAIM |
+							WQ_UNBOUND, 1);
+		if (!adapter->rx_workqueue)
+			goto err_kmalloc;
+
+		INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
+	}
+
 	if (adapter->if_ops.iface_work)
 		INIT_WORK(&adapter->iface_work, adapter->if_ops.iface_work);
 
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index a2733b1e63f9..e2635747d966 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -58,6 +58,9 @@ enum {
 #define MAX_TX_PENDING      100
 #define LOW_TX_PENDING      80
 
+#define HIGH_RX_PENDING     50
+#define LOW_RX_PENDING      20
+
 #define MWIFIEX_UPLD_SIZE               (2312)
 
 #define MAX_EVENT_SIZE                  2048
@@ -84,17 +87,12 @@ enum {
 #define MWIFIEX_PASSIVE_SCAN_CHAN_TIME	110
 #define MWIFIEX_ACTIVE_SCAN_CHAN_TIME	30
 #define MWIFIEX_SPECIFIC_SCAN_CHAN_TIME	30
+#define MWIFIEX_DEF_SCAN_CHAN_GAP_TIME  50
 
 #define SCAN_RSSI(RSSI)					(0x100 - ((u8)(RSSI)))
 
 #define MWIFIEX_MAX_TOTAL_SCAN_TIME	(MWIFIEX_TIMER_10S - MWIFIEX_TIMER_1S)
 
-#define MWIFIEX_MAX_SCAN_DELAY_CNT			50
-#define MWIFIEX_MAX_EMPTY_TX_Q_CNT			10
-#define MWIFIEX_SCAN_DELAY_MSEC				20
-
-#define MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN		2
-
 #define RSN_GTK_OUI_OFFSET				2
 
 #define MWIFIEX_OUI_NOT_PRESENT			0
@@ -415,6 +413,7 @@ struct mwifiex_roc_cfg {
 #define FW_DUMP_MAX_NAME_LEN		8
 #define FW_DUMP_HOST_READY		0xEE
 #define FW_DUMP_DONE			0xFF
+#define FW_DUMP_READ_DONE		0xFE
 
 struct memory_type_mapping {
 	u8 mem_name[FW_DUMP_MAX_NAME_LEN];
@@ -547,7 +546,6 @@ struct mwifiex_private {
 	u8 nick_name[16];
 	u16 current_key_index;
 	struct semaphore async_sem;
-	u8 report_scan_result;
 	struct cfg80211_scan_request *scan_request;
 	u8 cfg_bssid[6];
 	struct wps wps;
@@ -561,7 +559,6 @@ struct mwifiex_private {
 	u16 proberesp_idx;
 	u16 assocresp_idx;
 	u16 rsn_idx;
-	struct timer_list scan_delay_timer;
 	u8 ap_11n_enabled;
 	u8 ap_11ac_enabled;
 	u32 mgmt_frame_mask;
@@ -721,6 +718,12 @@ struct mwifiex_adapter {
 	atomic_t cmd_pending;
 	struct workqueue_struct *workqueue;
 	struct work_struct main_work;
+	struct workqueue_struct *rx_workqueue;
+	struct work_struct rx_work;
+	bool rx_work_enabled;
+	bool rx_processing;
+	bool delay_main_work;
+	bool rx_locked;
 	struct mwifiex_bss_prio_tbl bss_prio_tbl[MWIFIEX_MAX_BSS_NUM];
 	/* spin lock for init/shutdown */
 	spinlock_t mwifiex_lock;
@@ -761,6 +764,8 @@ struct mwifiex_adapter {
 	struct list_head scan_pending_q;
 	/* spin lock for scan_pending_q */
 	spinlock_t scan_pending_q_lock;
+	/* spin lock for RX processing routine */
+	spinlock_t rx_proc_lock;
 	struct sk_buff_head usb_rx_data_q;
 	u32 scan_processing;
 	u16 region_code;
@@ -770,6 +775,7 @@ struct mwifiex_adapter {
 	u16 specific_scan_time;
 	u16 active_scan_time;
 	u16 passive_scan_time;
+	u16 scan_chan_gap_time;
 	u8 fw_bands;
 	u8 adhoc_start_band;
 	u8 config_bands;
@@ -815,8 +821,6 @@ struct mwifiex_adapter {
 	spinlock_t queue_lock;		/* lock for tx queues */
 	u8 country_code[IEEE80211_COUNTRY_STRING_LEN];
 	u16 max_mgmt_ie_index;
-	u8 scan_delay_cnt;
-	u8 empty_tx_q_cnt;
 	const struct firmware *cal_data;
 	struct device_node *dt_node;
 
@@ -828,17 +832,18 @@ struct mwifiex_adapter {
 	u32 usr_dot_11ac_dev_cap_a;
 	u32 usr_dot_11ac_mcs_support;
 
-	atomic_t is_tx_received;
 	atomic_t pending_bridged_pkts;
 	struct semaphore *card_sem;
 	bool ext_scan;
 	u8 fw_api_ver;
-	u8 fw_key_api_major_ver, fw_key_api_minor_ver;
+	u8 key_api_major_ver, key_api_minor_ver;
 	struct work_struct iface_work;
 	unsigned long iface_work_flags;
 	struct memory_type_mapping *mem_type_mapping_tbl;
 	u8 num_mem_types;
 	u8 curr_mem_idx;
+	bool scan_chan_gap_enabled;
+	struct sk_buff_head rx_data_q;
 };
 
 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter);
@@ -1139,6 +1144,25 @@ mwifiex_11h_get_csa_closed_channel(struct mwifiex_private *priv)
 	return priv->csa_chan;
 }
 
+static inline u8 mwifiex_is_any_intf_active(struct mwifiex_private *priv)
+{
+	struct mwifiex_private *priv_num;
+	int i;
+
+	for (i = 0; i < priv->adapter->priv_num; i++) {
+		priv_num = priv->adapter->priv[i];
+		if (priv_num) {
+			if ((GET_BSS_ROLE(priv_num) == MWIFIEX_BSS_ROLE_UAP &&
+			     priv_num->bss_started) ||
+			    (GET_BSS_ROLE(priv_num) == MWIFIEX_BSS_ROLE_STA &&
+			     priv_num->media_connected))
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
 int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
 			     u32 func_init_shutdown);
 int mwifiex_add_card(void *, struct semaphore *, struct mwifiex_if_ops *, u8);
@@ -1274,6 +1298,7 @@ void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv);
 bool mwifiex_is_bss_in_11ac_mode(struct mwifiex_private *priv);
 u8 mwifiex_get_center_freq_index(struct mwifiex_private *priv, u8 band,
 				 u32 pri_chan, u8 chan_bw);
+int mwifiex_init_channel_scan_gap(struct mwifiex_adapter *adapter);
 
 #ifdef CONFIG_DEBUG_FS
 void mwifiex_debugfs_init(void);
diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c
index ff0545888dd0..c3a20f94f3c9 100644
--- a/drivers/net/wireless/mwifiex/pcie.c
+++ b/drivers/net/wireless/mwifiex/pcie.c
@@ -42,6 +42,10 @@ static struct memory_type_mapping mem_type_mapping_tbl[] = {
 	{"DTCM", NULL, 0, 0xF1},
 	{"SQRAM", NULL, 0, 0xF2},
 	{"IRAM", NULL, 0, 0xF3},
+	{"APU", NULL, 0, 0xF4},
+	{"CIU", NULL, 0, 0xF5},
+	{"ICU", NULL, 0, 0xF6},
+	{"MAC", NULL, 0, 0xF7},
 };
 
 static int
@@ -1271,12 +1275,26 @@ static int mwifiex_pcie_process_recv_data(struct mwifiex_adapter *adapter)
 		 */
 		pkt_len = *((__le16 *)skb_data->data);
 		rx_len = le16_to_cpu(pkt_len);
-		skb_put(skb_data, rx_len);
-		dev_dbg(adapter->dev,
-			"info: RECV DATA: Rd=%#x, Wr=%#x, Len=%d\n",
-			card->rxbd_rdptr, wrptr, rx_len);
-		skb_pull(skb_data, INTF_HEADER_LEN);
-		mwifiex_handle_rx_packet(adapter, skb_data);
+		if (WARN_ON(rx_len <= INTF_HEADER_LEN ||
+			    rx_len > MWIFIEX_RX_DATA_BUF_SIZE)) {
+			dev_err(adapter->dev,
+				"Invalid RX len %d, Rd=%#x, Wr=%#x\n",
+				rx_len, card->rxbd_rdptr, wrptr);
+			dev_kfree_skb_any(skb_data);
+		} else {
+			skb_put(skb_data, rx_len);
+			dev_dbg(adapter->dev,
+				"info: RECV DATA: Rd=%#x, Wr=%#x, Len=%d\n",
+				card->rxbd_rdptr, wrptr, rx_len);
+			skb_pull(skb_data, INTF_HEADER_LEN);
+			if (adapter->rx_work_enabled) {
+				skb_queue_tail(&adapter->rx_data_q, skb_data);
+				adapter->data_received = true;
+				atomic_inc(&adapter->rx_pending);
+			} else {
+				mwifiex_handle_rx_packet(adapter, skb_data);
+			}
+		}
 
 		skb_tmp = dev_alloc_skb(MWIFIEX_RX_DATA_BUF_SIZE);
 		if (!skb_tmp) {
@@ -1718,6 +1736,13 @@ static int mwifiex_pcie_process_event_ready(struct mwifiex_adapter *adapter)
 		   buffer is released. This is just to make things simpler,
 		   we need to find a better method of managing these buffers.
 		*/
+	} else {
+		if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
+				      CPU_INTR_EVENT_DONE)) {
+			dev_warn(adapter->dev,
+				 "Write register failed\n");
+			return -1;
+		}
 	}
 
 	return 0;
@@ -2218,8 +2243,8 @@ mwifiex_pcie_rdwr_firmware(struct mwifiex_adapter *adapter, u8 doneflag)
 		if (ctrl_data != FW_DUMP_HOST_READY) {
 			dev_info(adapter->dev,
 				 "The ctrl reg was changed, re-try again!\n");
-			mwifiex_write_reg(adapter, reg->fw_dump_ctrl,
-					  FW_DUMP_HOST_READY);
+			ret = mwifiex_write_reg(adapter, reg->fw_dump_ctrl,
+						FW_DUMP_HOST_READY);
 			if (ret) {
 				dev_err(adapter->dev, "PCIE write err\n");
 				return RDWR_STATUS_FAILURE;
@@ -2241,6 +2266,7 @@ static void mwifiex_pcie_fw_dump_work(struct mwifiex_adapter *adapter)
 	u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
 	enum rdwr_status stat;
 	u32 memory_size;
+	int ret;
 	static char *env[] = { "DRIVER=mwifiex_pcie", "EVENT=fw_dump", NULL };
 
 	if (!card->pcie.supports_fw_dump)
@@ -2284,6 +2310,12 @@ static void mwifiex_pcie_fw_dump_work(struct mwifiex_adapter *adapter)
 
 		if (memory_size == 0) {
 			dev_info(adapter->dev, "Firmware dump Finished!\n");
+			ret = mwifiex_write_reg(adapter, creg->fw_dump_ctrl,
+						FW_DUMP_READ_DONE);
+			if (ret) {
+				dev_err(adapter->dev, "PCIE write err\n");
+				goto done;
+			}
 			break;
 		}
 
@@ -2312,11 +2344,13 @@ static void mwifiex_pcie_fw_dump_work(struct mwifiex_adapter *adapter)
 			reg_end = creg->fw_dump_end;
 			for (reg = reg_start; reg <= reg_end; reg++) {
 				mwifiex_read_reg_byte(adapter, reg, dbg_ptr);
-				if (dbg_ptr < end_ptr)
+				if (dbg_ptr < end_ptr) {
 					dbg_ptr++;
-				else
+				} else {
 					dev_err(adapter->dev,
 						"Allocated buf not enough\n");
+					goto done;
+				}
 			}
 
 			if (stat != RDWR_STATUS_DONE)
diff --git a/drivers/net/wireless/mwifiex/pcie.h b/drivers/net/wireless/mwifiex/pcie.h
index a1a8fd3bc1be..200e8b0cb582 100644
--- a/drivers/net/wireless/mwifiex/pcie.h
+++ b/drivers/net/wireless/mwifiex/pcie.h
@@ -40,8 +40,8 @@
 #define MWIFIEX_TXBD_MASK			0x3F
 #define MWIFIEX_RXBD_MASK			0x3F
 
-#define MWIFIEX_MAX_EVT_BD			0x04
-#define MWIFIEX_EVTBD_MASK			0x07
+#define MWIFIEX_MAX_EVT_BD			0x08
+#define MWIFIEX_EVTBD_MASK			0x0f
 
 /* PCIE INTERNAL REGISTERS */
 #define PCIE_SCRATCH_0_REG				0xC10
@@ -69,6 +69,7 @@
 #define CPU_INTR_DOOR_BELL				BIT(1)
 #define CPU_INTR_SLEEP_CFM_DONE			BIT(2)
 #define CPU_INTR_RESET					BIT(3)
+#define CPU_INTR_EVENT_DONE				BIT(5)
 
 #define HOST_INTR_DNLD_DONE				BIT(0)
 #define HOST_INTR_UPLD_RDY				BIT(1)
diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index dee717a19ddb..ca64d4c94112 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -799,6 +799,7 @@ mwifiex_config_scan(struct mwifiex_private *priv,
 {
 	struct mwifiex_adapter *adapter = priv->adapter;
 	struct mwifiex_ie_types_num_probes *num_probes_tlv;
+	struct mwifiex_ie_types_scan_chan_gap *chan_gap_tlv;
 	struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv;
 	struct mwifiex_ie_types_bssid_list *bssid_tlv;
 	u8 *tlv_pos;
@@ -925,6 +926,23 @@ mwifiex_config_scan(struct mwifiex_private *priv,
 		if ((i && ssid_filter) ||
 		    !is_zero_ether_addr(scan_cfg_out->specific_bssid))
 			*filtered_scan = true;
+
+		if (user_scan_in->scan_chan_gap) {
+			dev_dbg(adapter->dev, "info: scan: channel gap = %d\n",
+				user_scan_in->scan_chan_gap);
+			*max_chan_per_scan =
+					MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN;
+
+			chan_gap_tlv = (void *)tlv_pos;
+			chan_gap_tlv->header.type =
+					 cpu_to_le16(TLV_TYPE_SCAN_CHANNEL_GAP);
+			chan_gap_tlv->header.len =
+				    cpu_to_le16(sizeof(chan_gap_tlv->chan_gap));
+			chan_gap_tlv->chan_gap =
+				     cpu_to_le16((user_scan_in->scan_chan_gap));
+			tlv_pos +=
+				  sizeof(struct mwifiex_ie_types_scan_chan_gap);
+		}
 	} else {
 		scan_cfg_out->bss_mode = (u8) adapter->scan_mode;
 		num_probes = adapter->scan_probes;
@@ -1050,12 +1068,6 @@ mwifiex_config_scan(struct mwifiex_private *priv,
 							    *filtered_scan);
 	}
 
-	/*
-	 * In associated state we will reduce the number of channels scanned per
-	 * scan command to 1 to avoid any traffic delay/loss.
-	 */
-	if (priv->media_connected)
-			*max_chan_per_scan = 1;
 }
 
 /*
@@ -1719,7 +1731,8 @@ mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info,
 
 		if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
 			bss = cfg80211_inform_bss(priv->wdev->wiphy,
-					    chan, bssid, timestamp,
+					    chan, CFG80211_BSS_FTYPE_UNKNOWN,
+					    bssid, timestamp,
 					    cap_info_bitmap, beacon_period,
 					    ie_buf, ie_len, rssi, GFP_KERNEL);
 			bss_priv = (struct mwifiex_bss_priv *)bss->priv;
@@ -1754,7 +1767,7 @@ static void mwifiex_complete_scan(struct mwifiex_private *priv)
 static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
 {
 	struct mwifiex_adapter *adapter = priv->adapter;
-	struct cmd_ctrl_node *cmd_node;
+	struct cmd_ctrl_node *cmd_node, *tmp_node;
 	unsigned long flags;
 
 	spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
@@ -1767,9 +1780,6 @@ static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
 		if (!adapter->ext_scan)
 			mwifiex_complete_scan(priv);
 
-		if (priv->report_scan_result)
-			priv->report_scan_result = false;
-
 		if (priv->scan_request) {
 			dev_dbg(adapter->dev, "info: notifying scan done\n");
 			cfg80211_scan_done(priv->scan_request, 0);
@@ -1778,37 +1788,36 @@ static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
 			priv->scan_aborting = false;
 			dev_dbg(adapter->dev, "info: scan already aborted\n");
 		}
-	} else {
-		if ((priv->scan_aborting && !priv->scan_request) ||
-		    priv->scan_block) {
-			spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
-					       flags);
-			adapter->scan_delay_cnt = MWIFIEX_MAX_SCAN_DELAY_CNT;
-			mod_timer(&priv->scan_delay_timer, jiffies);
-			dev_dbg(priv->adapter->dev,
-				"info: %s: triggerring scan abort\n", __func__);
-		} else if (!mwifiex_wmm_lists_empty(adapter) &&
-			   (priv->scan_request && (priv->scan_request->flags &
-					    NL80211_SCAN_FLAG_LOW_PRIORITY))) {
-			spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
-					       flags);
-			adapter->scan_delay_cnt = 1;
-			mod_timer(&priv->scan_delay_timer, jiffies +
-				  msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
-			dev_dbg(priv->adapter->dev,
-				"info: %s: deferring scan\n", __func__);
-		} else {
-			/* Get scan command from scan_pending_q and put to
-			 * cmd_pending_q
-			 */
-			cmd_node = list_first_entry(&adapter->scan_pending_q,
-						    struct cmd_ctrl_node, list);
+	} else if ((priv->scan_aborting && !priv->scan_request) ||
+		   priv->scan_block) {
+		list_for_each_entry_safe(cmd_node, tmp_node,
+					 &adapter->scan_pending_q, list) {
 			list_del(&cmd_node->list);
-			spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
-					       flags);
-			mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
-							true);
+			mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
+		}
+		spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
+
+		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
+		adapter->scan_processing = false;
+		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
+
+		if (priv->scan_request) {
+			dev_dbg(adapter->dev, "info: aborting scan\n");
+			cfg80211_scan_done(priv->scan_request, 1);
+			priv->scan_request = NULL;
+		} else {
+			priv->scan_aborting = false;
+			dev_dbg(adapter->dev, "info: scan already aborted\n");
 		}
+	} else {
+		/* Get scan command from scan_pending_q and put to
+		 * cmd_pending_q
+		 */
+		cmd_node = list_first_entry(&adapter->scan_pending_q,
+					    struct cmd_ctrl_node, list);
+		list_del(&cmd_node->list);
+		spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
+		mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
 	}
 
 	return;
@@ -1970,9 +1979,34 @@ int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private *priv,
 /* This function handles the command response of extended scan */
 int mwifiex_ret_802_11_scan_ext(struct mwifiex_private *priv)
 {
+	struct mwifiex_adapter *adapter = priv->adapter;
+	struct host_cmd_ds_command *cmd_ptr;
+	struct cmd_ctrl_node *cmd_node;
+	unsigned long cmd_flags, scan_flags;
+	bool complete_scan = false;
+
 	dev_dbg(priv->adapter->dev, "info: EXT scan returns successfully\n");
 
-	mwifiex_complete_scan(priv);
+	spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_flags);
+	spin_lock_irqsave(&adapter->scan_pending_q_lock, scan_flags);
+	if (list_empty(&adapter->scan_pending_q)) {
+		complete_scan = true;
+		list_for_each_entry(cmd_node, &adapter->cmd_pending_q, list) {
+			cmd_ptr = (void *)cmd_node->cmd_skb->data;
+			if (le16_to_cpu(cmd_ptr->command) ==
+			    HostCmd_CMD_802_11_SCAN_EXT) {
+				dev_dbg(priv->adapter->dev,
+					"Scan pending in command pending list");
+				complete_scan = false;
+				break;
+			}
+		}
+	}
+	spin_unlock_irqrestore(&adapter->scan_pending_q_lock, scan_flags);
+	spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, cmd_flags);
+
+	if (complete_scan)
+		mwifiex_complete_scan(priv);
 
 	return 0;
 }
diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index 1770fa3fc1e6..b25766b43b9f 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c
@@ -279,6 +279,8 @@ static int mwifiex_sdio_suspend(struct device *dev)
 #define SDIO_DEVICE_ID_MARVELL_8797   (0x9129)
 /* Device ID for SD8897 */
 #define SDIO_DEVICE_ID_MARVELL_8897   (0x912d)
+/* Device ID for SD8887 */
+#define SDIO_DEVICE_ID_MARVELL_8887   (0x9135)
 
 /* WLAN IDs */
 static const struct sdio_device_id mwifiex_ids[] = {
@@ -290,6 +292,8 @@ static const struct sdio_device_id mwifiex_ids[] = {
 		.driver_data = (unsigned long) &mwifiex_sdio_sd8797},
 	{SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
 		.driver_data = (unsigned long) &mwifiex_sdio_sd8897},
+	{SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
+		.driver_data = (unsigned long)&mwifiex_sdio_sd8887},
 	{},
 };
 
@@ -448,28 +452,31 @@ static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
 {
 	u8 reg;
+	struct sdio_mmc_card *card = adapter->card;
 
 	adapter->ioport = MEM_PORT;
 
 	/* enable sdio new mode */
-	if (mwifiex_read_reg(adapter, CARD_CONFIG_2_1_REG, &reg))
+	if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, &reg))
 		return -1;
-	if (mwifiex_write_reg(adapter, CARD_CONFIG_2_1_REG,
+	if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
 			      reg | CMD53_NEW_MODE))
 		return -1;
 
 	/* Configure cmd port and enable reading rx length from the register */
-	if (mwifiex_read_reg(adapter, CMD_CONFIG_0, &reg))
+	if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, &reg))
 		return -1;
-	if (mwifiex_write_reg(adapter, CMD_CONFIG_0, reg | CMD_PORT_RD_LEN_EN))
+	if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
+			      reg | CMD_PORT_RD_LEN_EN))
 		return -1;
 
 	/* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
 	 * completed
 	 */
-	if (mwifiex_read_reg(adapter, CMD_CONFIG_1, &reg))
+	if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, &reg))
 		return -1;
-	if (mwifiex_write_reg(adapter, CMD_CONFIG_1, reg | CMD_PORT_AUTO_EN))
+	if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
+			      reg | CMD_PORT_AUTO_EN))
 		return -1;
 
 	return 0;
@@ -496,17 +503,17 @@ static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
 	}
 
 	/* Read the IO port */
-	if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, &reg))
+	if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, &reg))
 		adapter->ioport |= (reg & 0xff);
 	else
 		return -1;
 
-	if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, &reg))
+	if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, &reg))
 		adapter->ioport |= ((reg & 0xff) << 8);
 	else
 		return -1;
 
-	if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, &reg))
+	if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, &reg))
 		adapter->ioport |= ((reg & 0xff) << 16);
 	else
 		return -1;
@@ -514,8 +521,8 @@ cont:
 	pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
 
 	/* Set Host interrupt reset to read to clear */
-	if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, &reg))
-		mwifiex_write_reg(adapter, HOST_INT_RSR_REG,
+	if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, &reg))
+		mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
 				  reg | card->reg->sdio_int_mask);
 	else
 		return -1;
@@ -622,22 +629,15 @@ static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
 
 	dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
 
-	if (card->supports_sdio_new_mode &&
-	    !(wr_bitmap & reg->data_port_mask)) {
+	if (!(wr_bitmap & card->mp_data_port_mask)) {
 		adapter->data_sent = true;
 		return -EBUSY;
-	} else if (!card->supports_sdio_new_mode &&
-		   !(wr_bitmap & card->mp_data_port_mask)) {
-		return -1;
 	}
 
 	if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
 		card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
 		*port = card->curr_wr_port;
-		if (((card->supports_sdio_new_mode) &&
-		     (++card->curr_wr_port == card->max_ports)) ||
-		    ((!card->supports_sdio_new_mode) &&
-		     (++card->curr_wr_port == card->mp_end_port)))
+		if (++card->curr_wr_port == card->mp_end_port)
 			card->curr_wr_port = reg->start_wr_port;
 	} else {
 		adapter->data_sent = true;
@@ -715,7 +715,7 @@ static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
 	struct sdio_func *func = card->func;
 
 	sdio_claim_host(func);
-	mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, 0);
+	mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
 	sdio_release_irq(func);
 	sdio_release_host(func);
 }
@@ -736,7 +736,7 @@ static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
 		return;
 	}
 
-	sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG];
+	sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
 	if (sdio_ireg) {
 		/*
 		 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
@@ -801,7 +801,7 @@ static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
 	}
 
 	/* Simply write the mask to the register */
-	ret = mwifiex_write_reg_locked(func, HOST_INT_MASK_REG,
+	ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
 				       card->reg->host_int_enable);
 	if (ret) {
 		dev_err(adapter->dev, "enable host interrupt failed\n");
@@ -1055,7 +1055,13 @@ static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
 	switch (upld_typ) {
 	case MWIFIEX_TYPE_DATA:
 		dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n");
-		mwifiex_handle_rx_packet(adapter, skb);
+		if (adapter->rx_work_enabled) {
+			skb_queue_tail(&adapter->rx_data_q, skb);
+			adapter->data_received = true;
+			atomic_inc(&adapter->rx_pending);
+		} else {
+			mwifiex_handle_rx_packet(adapter, skb);
+		}
 		break;
 
 	case MWIFIEX_TYPE_CMD:
@@ -1335,8 +1341,8 @@ static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
 		u32 pkt_type;
 
 		/* read the len of control packet */
-		rx_len = card->mp_regs[CMD_RD_LEN_1] << 8;
-		rx_len |= (u16) card->mp_regs[CMD_RD_LEN_0];
+		rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
+		rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
 		rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
 		if (rx_len <= INTF_HEADER_LEN ||
 		    (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
@@ -1527,8 +1533,7 @@ static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
 			__func__);
 
 		if (MP_TX_AGGR_IN_PROGRESS(card)) {
-			if (!mp_tx_aggr_port_limit_reached(card) &&
-			    MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
+			if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
 				f_precopy_cur_buf = 1;
 
 				if (!(card->mp_wr_bitmap &
@@ -1540,8 +1545,7 @@ static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
 				/* No room in Aggr buf, send it */
 				f_send_aggr_buf = 1;
 
-				if (mp_tx_aggr_port_limit_reached(card) ||
-				    !(card->mp_wr_bitmap &
+				if (!(card->mp_wr_bitmap &
 				      (1 << card->curr_wr_port)))
 					f_send_cur_buf = 1;
 				else
@@ -1826,11 +1830,11 @@ static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
 	sdio_set_drvdata(card->func, card);
 
 	/*
-	 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
+	 * Read the host_int_status_reg for ACK the first interrupt got
 	 * from the bootloader. If we don't do this we get a interrupt
 	 * as soon as we register the irq.
 	 */
-	mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg);
+	mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
 
 	/* Get SDIO ioport */
 	mwifiex_init_sdio_ioport(adapter);
@@ -2233,3 +2237,4 @@ MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
+MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);
diff --git a/drivers/net/wireless/mwifiex/sdio.h b/drivers/net/wireless/mwifiex/sdio.h
index 6b8835ec88f1..20cd9adc98d3 100644
--- a/drivers/net/wireless/mwifiex/sdio.h
+++ b/drivers/net/wireless/mwifiex/sdio.h
@@ -33,6 +33,7 @@
 #define SD8787_DEFAULT_FW_NAME "mrvl/sd8787_uapsta.bin"
 #define SD8797_DEFAULT_FW_NAME "mrvl/sd8797_uapsta.bin"
 #define SD8897_DEFAULT_FW_NAME "mrvl/sd8897_uapsta.bin"
+#define SD8887_DEFAULT_FW_NAME "mrvl/sd8887_uapsta.bin"
 
 #define BLOCK_MODE	1
 #define BYTE_MODE	0
@@ -52,13 +53,9 @@
 #define HOST_TERM_CMD53			(0x1U << 2)
 #define REG_PORT			0
 #define MEM_PORT			0x10000
-#define CMD_RD_LEN_0			0xB4
-#define CMD_RD_LEN_1			0xB5
-#define CARD_CONFIG_2_1_REG             0xCD
+
 #define CMD53_NEW_MODE			(0x1U << 0)
-#define CMD_CONFIG_0			0xB8
 #define CMD_PORT_RD_LEN_EN		(0x1U << 2)
-#define CMD_CONFIG_1			0xB9
 #define CMD_PORT_AUTO_EN		(0x1U << 0)
 #define CMD_PORT_SLCT			0x8000
 #define UP_LD_CMD_PORT_HOST_INT_STATUS	(0x40U)
@@ -70,38 +67,23 @@
 /* Misc. Config Register : Auto Re-enable interrupts */
 #define AUTO_RE_ENABLE_INT              BIT(4)
 
-/* Host Control Registers */
-/* Host Control Registers : I/O port 0 */
-#define IO_PORT_0_REG			0x78
-/* Host Control Registers : I/O port 1 */
-#define IO_PORT_1_REG			0x79
-/* Host Control Registers : I/O port 2 */
-#define IO_PORT_2_REG			0x7A
-
 /* Host Control Registers : Configuration */
 #define CONFIGURATION_REG		0x00
 /* Host Control Registers : Host power up */
 #define HOST_POWER_UP			(0x1U << 1)
 
-/* Host Control Registers : Host interrupt mask */
-#define HOST_INT_MASK_REG		0x02
 /* Host Control Registers : Upload host interrupt mask */
 #define UP_LD_HOST_INT_MASK		(0x1U)
 /* Host Control Registers : Download host interrupt mask */
 #define DN_LD_HOST_INT_MASK		(0x2U)
 
-/* Host Control Registers : Host interrupt status */
-#define HOST_INTSTATUS_REG		0x03
 /* Host Control Registers : Upload host interrupt status */
 #define UP_LD_HOST_INT_STATUS		(0x1U)
 /* Host Control Registers : Download host interrupt status */
 #define DN_LD_HOST_INT_STATUS		(0x2U)
 
-/* Host Control Registers : Host interrupt RSR */
-#define HOST_INT_RSR_REG		0x01
-
 /* Host Control Registers : Host interrupt status */
-#define HOST_INT_STATUS_REG		0x28
+#define CARD_INT_STATUS_REG		0x28
 
 /* Card Control Registers : Card I/O ready */
 #define CARD_IO_READY                   (0x1U << 3)
@@ -203,10 +185,16 @@ struct mwifiex_sdio_card_reg {
 	u8 base_1_reg;
 	u8 poll_reg;
 	u8 host_int_enable;
+	u8 host_int_rsr_reg;
+	u8 host_int_status_reg;
+	u8 host_int_mask_reg;
 	u8 status_reg_0;
 	u8 status_reg_1;
 	u8 sdio_int_mask;
 	u32 data_port_mask;
+	u8 io_port_0_reg;
+	u8 io_port_1_reg;
+	u8 io_port_2_reg;
 	u8 max_mp_regs;
 	u8 rd_bitmap_l;
 	u8 rd_bitmap_u;
@@ -219,6 +207,15 @@ struct mwifiex_sdio_card_reg {
 	u8 rd_len_p0_l;
 	u8 rd_len_p0_u;
 	u8 card_misc_cfg_reg;
+	u8 card_cfg_2_1_reg;
+	u8 cmd_rd_len_0;
+	u8 cmd_rd_len_1;
+	u8 cmd_rd_len_2;
+	u8 cmd_rd_len_3;
+	u8 cmd_cfg_0;
+	u8 cmd_cfg_1;
+	u8 cmd_cfg_2;
+	u8 cmd_cfg_3;
 	u8 fw_dump_ctrl;
 	u8 fw_dump_start;
 	u8 fw_dump_end;
@@ -274,10 +271,16 @@ static const struct mwifiex_sdio_card_reg mwifiex_reg_sd87xx = {
 	.base_1_reg = 0x0041,
 	.poll_reg = 0x30,
 	.host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK,
+	.host_int_rsr_reg = 0x1,
+	.host_int_mask_reg = 0x02,
+	.host_int_status_reg = 0x03,
 	.status_reg_0 = 0x60,
 	.status_reg_1 = 0x61,
 	.sdio_int_mask = 0x3f,
 	.data_port_mask = 0x0000fffe,
+	.io_port_0_reg = 0x78,
+	.io_port_1_reg = 0x79,
+	.io_port_2_reg = 0x7A,
 	.max_mp_regs = 64,
 	.rd_bitmap_l = 0x04,
 	.rd_bitmap_u = 0x05,
@@ -296,10 +299,16 @@ static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8897 = {
 	.poll_reg = 0x50,
 	.host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
 			CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
+	.host_int_rsr_reg = 0x1,
+	.host_int_status_reg = 0x03,
+	.host_int_mask_reg = 0x02,
 	.status_reg_0 = 0xc0,
 	.status_reg_1 = 0xc1,
 	.sdio_int_mask = 0xff,
 	.data_port_mask = 0xffffffff,
+	.io_port_0_reg = 0xD8,
+	.io_port_1_reg = 0xD9,
+	.io_port_2_reg = 0xDA,
 	.max_mp_regs = 184,
 	.rd_bitmap_l = 0x04,
 	.rd_bitmap_u = 0x05,
@@ -312,11 +321,61 @@ static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8897 = {
 	.rd_len_p0_l = 0x0c,
 	.rd_len_p0_u = 0x0d,
 	.card_misc_cfg_reg = 0xcc,
+	.card_cfg_2_1_reg = 0xcd,
+	.cmd_rd_len_0 = 0xb4,
+	.cmd_rd_len_1 = 0xb5,
+	.cmd_rd_len_2 = 0xb6,
+	.cmd_rd_len_3 = 0xb7,
+	.cmd_cfg_0 = 0xb8,
+	.cmd_cfg_1 = 0xb9,
+	.cmd_cfg_2 = 0xba,
+	.cmd_cfg_3 = 0xbb,
 	.fw_dump_ctrl = 0xe2,
 	.fw_dump_start = 0xe3,
 	.fw_dump_end = 0xea,
 };
 
+static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8887 = {
+	.start_rd_port = 0,
+	.start_wr_port = 0,
+	.base_0_reg = 0x6C,
+	.base_1_reg = 0x6D,
+	.poll_reg = 0x5C,
+	.host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
+			CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
+	.host_int_rsr_reg = 0x4,
+	.host_int_status_reg = 0x0C,
+	.host_int_mask_reg = 0x08,
+	.status_reg_0 = 0x90,
+	.status_reg_1 = 0x91,
+	.sdio_int_mask = 0xff,
+	.data_port_mask = 0xffffffff,
+	.io_port_0_reg = 0xE4,
+	.io_port_1_reg = 0xE5,
+	.io_port_2_reg = 0xE6,
+	.max_mp_regs = 196,
+	.rd_bitmap_l = 0x10,
+	.rd_bitmap_u = 0x11,
+	.rd_bitmap_1l = 0x12,
+	.rd_bitmap_1u = 0x13,
+	.wr_bitmap_l = 0x14,
+	.wr_bitmap_u = 0x15,
+	.wr_bitmap_1l = 0x16,
+	.wr_bitmap_1u = 0x17,
+	.rd_len_p0_l = 0x18,
+	.rd_len_p0_u = 0x19,
+	.card_misc_cfg_reg = 0xd8,
+	.card_cfg_2_1_reg = 0xd9,
+	.cmd_rd_len_0 = 0xc0,
+	.cmd_rd_len_1 = 0xc1,
+	.cmd_rd_len_2 = 0xc2,
+	.cmd_rd_len_3 = 0xc3,
+	.cmd_cfg_0 = 0xc4,
+	.cmd_cfg_1 = 0xc5,
+	.cmd_cfg_2 = 0xc6,
+	.cmd_cfg_3 = 0xc7,
+};
+
 static const struct mwifiex_sdio_device mwifiex_sdio_sd8786 = {
 	.firmware = SD8786_DEFAULT_FW_NAME,
 	.reg = &mwifiex_reg_sd87xx,
@@ -369,6 +428,19 @@ static const struct mwifiex_sdio_device mwifiex_sdio_sd8897 = {
 	.supports_fw_dump = true,
 };
 
+static const struct mwifiex_sdio_device mwifiex_sdio_sd8887 = {
+	.firmware = SD8887_DEFAULT_FW_NAME,
+	.reg = &mwifiex_reg_sd8887,
+	.max_ports = 32,
+	.mp_agg_pkt_limit = 16,
+	.supports_sdio_new_mode = true,
+	.has_control_mask = false,
+	.tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
+	.mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
+	.mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
+	.supports_fw_dump = false,
+};
+
 /*
  * .cmdrsp_complete handler
  */
diff --git a/drivers/net/wireless/mwifiex/sta_cmd.c b/drivers/net/wireless/mwifiex/sta_cmd.c
index 733de92a4c61..1c2ca291d1f5 100644
--- a/drivers/net/wireless/mwifiex/sta_cmd.c
+++ b/drivers/net/wireless/mwifiex/sta_cmd.c
@@ -938,7 +938,7 @@ mwifiex_cmd_802_11_key_material_v1(struct mwifiex_private *priv,
 		cmd->size = cpu_to_le16(sizeof(key_material->action) + S_DS_GEN
 					+ key_param_len);
 
-		if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) {
+		if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
 			tlv_mac = (void *)((u8 *)&key_material->key_param_set +
 					   key_param_len);
 			tlv_mac->header.type =
@@ -965,7 +965,7 @@ mwifiex_cmd_802_11_key_material(struct mwifiex_private *priv,
 				u16 cmd_action, u32 cmd_oid,
 				struct mwifiex_ds_encrypt_key *enc_key)
 {
-	if (priv->adapter->fw_key_api_major_ver == FW_KEY_API_VER_MAJOR_V2)
+	if (priv->adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2)
 		return mwifiex_cmd_802_11_key_material_v2(priv, cmd,
 							  cmd_action, cmd_oid,
 							  enc_key);
diff --git a/drivers/net/wireless/mwifiex/sta_cmdresp.c b/drivers/net/wireless/mwifiex/sta_cmdresp.c
index 08b78baeb846..4aad44685f8d 100644
--- a/drivers/net/wireless/mwifiex/sta_cmdresp.c
+++ b/drivers/net/wireless/mwifiex/sta_cmdresp.c
@@ -85,8 +85,6 @@ mwifiex_process_cmdresp_error(struct mwifiex_private *priv,
 		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 		adapter->scan_processing = false;
 		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
-		if (priv->report_scan_result)
-			priv->report_scan_result = false;
 		break;
 
 	case HostCmd_CMD_MAC_CONTROL:
@@ -637,7 +635,7 @@ static int mwifiex_ret_802_11_key_material_v2(struct mwifiex_private *priv,
 static int mwifiex_ret_802_11_key_material(struct mwifiex_private *priv,
 					   struct host_cmd_ds_command *resp)
 {
-	if (priv->adapter->fw_key_api_major_ver == FW_KEY_API_VER_MAJOR_V2)
+	if (priv->adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2)
 		return mwifiex_ret_802_11_key_material_v2(priv, resp);
 	else
 		return mwifiex_ret_802_11_key_material_v1(priv, resp);
diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index caae9738100a..92f3eb839866 100644
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -287,10 +287,13 @@ int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 			return -1;
 
 		if (mwifiex_band_to_radio_type(bss_desc->bss_band) ==
-						HostCmd_SCAN_RADIO_TYPE_BG)
+						HostCmd_SCAN_RADIO_TYPE_BG) {
 			config_bands = BAND_B | BAND_G | BAND_GN;
-		else
-			config_bands = BAND_A | BAND_AN | BAND_AAC;
+		} else {
+			config_bands = BAND_A | BAND_AN;
+			if (adapter->fw_bands & BAND_AAC)
+				config_bands |= BAND_AAC;
+		}
 
 		if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands))
 			adapter->config_bands = config_bands;
@@ -877,7 +880,7 @@ static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
 			return -1;
 		}
 
-		if (adapter->fw_key_api_major_ver == FW_KEY_API_VER_MAJOR_V2) {
+		if (adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2) {
 			memcpy(encrypt_key->key_material,
 			       wep_key->key_material, wep_key->key_length);
 			encrypt_key->key_len = wep_key->key_length;
@@ -903,7 +906,7 @@ static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
 			memset(&priv->wep_key[index], 0,
 			       sizeof(struct mwifiex_wep_key));
 
-		if (adapter->fw_key_api_major_ver == FW_KEY_API_VER_MAJOR_V2)
+		if (adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2)
 			enc_key = encrypt_key;
 		else
 			enc_key = NULL;
diff --git a/drivers/net/wireless/mwifiex/tdls.c b/drivers/net/wireless/mwifiex/tdls.c
index 4c5fd953893d..e2949077f5b5 100644
--- a/drivers/net/wireless/mwifiex/tdls.c
+++ b/drivers/net/wireless/mwifiex/tdls.c
@@ -871,7 +871,9 @@ void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
 			break;
 		case WLAN_EID_RSN:
 			memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
-			       sizeof(struct ieee_types_header) + pos[1]);
+			       sizeof(struct ieee_types_header) +
+			       min_t(u8, pos[1], IEEE_MAX_IE_SIZE -
+				     sizeof(struct ieee_types_header)));
 			break;
 		case WLAN_EID_QOS_CAPA:
 			sta_ptr->tdls_cap.qos_info = pos[2];
diff --git a/drivers/net/wireless/mwifiex/usb.c b/drivers/net/wireless/mwifiex/usb.c
index 7118a18b91ba..4371e12b36f3 100644
--- a/drivers/net/wireless/mwifiex/usb.c
+++ b/drivers/net/wireless/mwifiex/usb.c
@@ -357,7 +357,7 @@ static int mwifiex_usb_probe(struct usb_interface *intf,
 		card->usb_boot_state = USB8XXX_FW_READY;
 		break;
 	default:
-		pr_warning("unknown id_product %#x\n", id_product);
+		pr_warn("unknown id_product %#x\n", id_product);
 		card->usb_boot_state = USB8XXX_FW_DNLD;
 		break;
 	}
diff --git a/drivers/net/wireless/mwifiex/util.c b/drivers/net/wireless/mwifiex/util.c
index cee028321a9a..ec79c49de097 100644
--- a/drivers/net/wireless/mwifiex/util.c
+++ b/drivers/net/wireless/mwifiex/util.c
@@ -172,7 +172,7 @@ mwifiex_process_mgmt_packet(struct mwifiex_private *priv,
 
 	cfg80211_rx_mgmt(priv->wdev, priv->roc_cfg.chan.center_freq,
 			 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len,
-			 0, GFP_ATOMIC);
+			 0);
 
 	return 0;
 }